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The study concluded that testing hormone levels after stimulation is not reliable for identifying carriers of 21-hydroxylase deficiency; genetic testing is necessary.

Low vitamin D levels are linked to different types of hair loss.

Redheaded people may have evolved to efficiently make vitamin D in areas with less sunlight.

Patients with alopecia areata may have lower vitamin D levels than healthy people.

New mutations in the VDR gene cause vitamin D-resistant rickets without hair loss.

8-OHdG may help diagnose and assess alopecia areata.

Patients with this syndrome can have different responses and worsening resistance to treatment over time.

Rubbing vitamin D3 on skin can help prevent hair loss from chemotherapy and slow breast tumor growth in mice.

A unique gene mutation causes vitamin D-resistant rickets without causing hair loss.

Hair analysis can show changes in vitamin D levels over time.

Patients with the same vitamin D receptor mutation showed different symptoms due to other factors.

The document's conclusion cannot be provided because the document is not available or cannot be read.

Vitamin D receptors in hair follicles change with the hair cycle, affecting hair growth.

The DHT immunoassay is unreliable due to high cross-reactivity with testosterone.

The vitamin D receptor can regulate genes and affect hair and hormone levels without its usual activator.

Researchers successfully made new compounds for hormone level tests, but one attempt led to an unexpected product, correcting a past error.

People with non-scarring hair loss often have lower vitamin D levels than those without hair loss.

Low vitamin D levels may affect ovulation and progesterone in infertile women.

Three new gene mutations cause rickets and hair loss, treatable with high calcium and calcidol, but hair regrowth is rare.

Measuring 17-hydroxyprogesterone in hair can help monitor androgen levels in people with congenital adrenal hyperplasia.

1,25-dihydroxyvitamin D3 helps melanocyte precursors from hair follicles grow and produce melanin, aiding vitiligo treatment understanding.

A vitamin D receptor mutation causes rickets and affects immune responses.

Non-classical 21 hydroxylase deficiency is an underdiagnosed cause of female hair loss and polycystic ovarian syndrome.

A girl with rickets and hair loss was found to have a rare condition where her body didn't respond to vitamin D treatment.

A single amino acid change in the vitamin D receptor can disrupt its function and lead to hair loss.

Low vitamin D levels might indicate more severe hair loss in alopecia areata patients.

Tunisian children with hereditary vitamin D-resistant rickets showed improvement with calcium treatment, and new genetic mutations were identified.

Two siblings with a rare type of rickets and hair loss had low vitamin D levels, which is not typical for their condition.

Vitamin D receptor helps control hair growth genes in skin cells.